Leviticus 14:19-22

19And the priest shall offer the sin-offering, and make atonement for him that is to be cleansed from his uncleanness; and afterwards shall he slaughter the burnt-offering.

20And the priest shall offer the burnt-offering and the oblation upon the altar; and the priest shall make atonement for him, and he shall be clean.

21But if he be poor, and his hand be not able to get it, then he shall take one lamb for a trespass-offering, for a wave-offering, to make atonement for him; and one tenth part of fine flour mingled with oil for an oblation; and a log of oil,

22and two turtle-doves, or two young pigeons, as his hand may be able to get: the one shall be a sin-offering, and the other a burnt-offering.